Each SAM7R-66 receiver is milled from a hot-die
hammer forged receiver blank by the Arsenal Co. of Bulgaria. Other
milled-receiver AKs are machined from bar stock, but Arsenal’s hot-die
hammer forging produces stronger and finer-grained steel. Internal voids
and cooling deformations are eliminated by the 5-ton hammer forging
process.

Each forged receiver blank requires over 5.5 hours of milling before
assembly. This forging and milling process is complex and
time-intensive, but Arsenal’s meticulous attention to detail delivers a
receiver of unequalled strength, precision and durability.

After successfully fulfilling military requirements, for the first time,
the SAM7R-66 is being made available to the public with Arsenal’s
latest design Picatinny Quad Rail Handguard System. The PR-01 Picatinny
Quad Rail Handguard System follows Arsenal’s legacy of quality and
craftsmanship and provides superior platform for wide range of
attachments, including optics, flash lights, lasers, forward grips, and
other accessories of your choice.

The PR-01 Picatinny Quad Rail Handguard System was designed and manufactured to meet and exceed the following stringent military requirements: